I am a complete beginner in graphics developing with XNA/Monogame. Started my own project using Monogame 3.0 for WinRT. I have this unexplainable issue that some of the vertices disappear while doing some updates on them.

Basically, it is a game with balls who collide with the walls and with each other and in certain conditions they explode. When they explode they disappear. Here is a video demonstrating the issue. I used wireframes so that it is easier to see how vertices are missing. The perfect exploding balls are the ones which are result by user input with mouse clicking. Thanks for the help.

The situations is: I draw user primitives with triangle strips using like this

I'm guessing that your Remove function doesn't completely remove something. But it's hard to tell from the video since there are so many particles and they all look the same. This issue is still happening, I would suggest adding numbers to the particles so you can see exactly which two particles explode at the end, and then go back in the video and see when they disappeared initially. Maybe they didn't even initially exist, but it's hard to tell without some way to distinguish them.
–
VladimirDec 26 '14 at 16:51

1 Answer
1

From looking at the video and your Explode() method, I am taking a guess that under certain conditions your vertices are located at the center and therefor are not getting updated correctly. Is there any particular reason that this check is in there?